src/saveload/signs_sl.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file signs_sl.cpp Code handling saving and loading of economy data */
  11
  12 #include "../stdafx.h"
  13 #include "../signs_base.h"
  14 #include "../fios.h"
  15
  16 #include "saveload.h"
  17
  18 #include "../safeguards.h"
  19
  20 /** Description of a sign within the savegame. */
  21 static const SaveLoad _sign_desc[] = {
  22         SLE_CONDVAR(Sign, name,  SLE_NAME,                   0, 83),
  23         SLE_CONDSTR(Sign, name,  SLE_STR | SLF_ALLOW_CONTROL, 0, 84, SL_MAX_VERSION),
  24         SLE_CONDVAR(Sign, x,     SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
  25         SLE_CONDVAR(Sign, y,     SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
  26         SLE_CONDVAR(Sign, x,     SLE_INT32,                  5, SL_MAX_VERSION),
  27         SLE_CONDVAR(Sign, y,     SLE_INT32,                  5, SL_MAX_VERSION),
  28         SLE_CONDVAR(Sign, owner, SLE_UINT8,                  6, SL_MAX_VERSION),
  29         SLE_CONDVAR(Sign, z,     SLE_FILE_U8  | SLE_VAR_I32, 0, 163),
  30         SLE_CONDVAR(Sign, z,     SLE_INT32,                164, SL_MAX_VERSION),
  31         SLE_END()
  32 };
  33
  34 /** Save all signs */
  35 static void Save_SIGN()
  36 {
  37         Sign *si;
  38
  39         FOR_ALL_SIGNS(si) {
  40                 SlSetArrayIndex(si->index);
  41                 SlObject(si, _sign_desc);
  42         }
  43 }
  44
  45 /** Load all signs */
  46 static void Load_SIGN()
  47 {
  48         int index;
  49         while ((index = SlIterateArray()) != -1) {
  50                 Sign *si = new (index) Sign();
  51                 SlObject(si, _sign_desc);
  52                 /* Before version 6.1, signs didn't have owner.
  53                  * Before version 83, invalid signs were determined by si->str == 0.
  54                  * Before version 103, owner could be a bankrupted company.
  55                  *  - we can't use IsValidCompany() now, so this is fixed in AfterLoadGame()
  56                  * All signs that were saved are valid (including those with just 'Sign' and INVALID_OWNER).
  57                  *  - so set owner to OWNER_NONE if needed (signs from pre-version 6.1 would be lost) */
  58                 if (IsSavegameVersionBefore(6, 1) || (IsSavegameVersionBefore(83) && si->owner == INVALID_OWNER)) {
  59                         si->owner = OWNER_NONE;
  60                 }
  61
  62                 /* Signs placed in scenario editor shall now be OWNER_DEITY */
  63                 if (IsSavegameVersionBefore(171) && si->owner == OWNER_NONE && _file_to_saveload.abstract_ftype == FT_SCENARIO) {
  64                         si->owner = OWNER_DEITY;
  65                 }
  66         }
  67 }
  68
  69 /** Chunk handlers related to signs. */
  70 extern const ChunkHandler _sign_chunk_handlers[] = {
  71         { 'SIGN', Save_SIGN, Load_SIGN, NULL, NULL, CH_ARRAY | CH_LAST},
  72 };